I have a 1991 f250 with a 460. Want to make upwards of 500whp what's some simple mods I can do to get me closers to that goal?

 

Simple mods won't get you there. You would need to do some serious motor and head work for starters.

 

Sorry wrong thread.

 

Carburetor, cam, heads or good head work, and a good exhaust.

 

cut out the ventures in the center of the air intake tubes or put on an aftermarket cold air intake. The biggest power reduction on these engines is the air intake and smog. Previous generations of the 460 made upwards of 500 hp getting anywhere near that you will need new heads and bored out cylinders at least. However, you can gain 5+ horsepower this way. I took out my air filter and went for a drive just to see what that would do and I gained a very noticable amount of additional power and torque. The angles and turns in the intake bring down the power a lot.

You can also make a decent amount of power with a slight ignition timing retardation and a performance camshaft. Maybe even 100 hp. That would likely also include new pushrods valves and valve springs for the additional lobe travel on the cam. None of this can be done in California or smog states obviously.

https://www.ford-trucks.com/forums/1...ree-power.html

 

I looked inside my airbox and there's no baffles or restrictions in there. These "ventures" that are mentioned in this thread, are they located in that "junction box" just before the throttle body, where the two intake hoses come together by any chance?